| 2259791 | Composite, with 3 known prime factors. Cofactor is composite. Trial Factored to 268 TF target 262 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 280 / 280 | | 30 | 250000 | 163 / 640 |
Estimated T-Level: 26.3 ⓘ TF below 2^82 is very unlikely to find new factors due to ECM effort. |
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Factored | PRP without proof (not generated) | 2017-10-10 | Oliver Kruse | 8428A82D831DE3C3 | 2 | 0 | 1 | 3 | | Factored | PRP without proof (not generated) | 2017-11-21 | storm5510 | 8428A82D831DE3C3 | 2 | 270266 | 1 | 3 | | Verified | Certified Good | 2025-02-11 | jeriffee | C122D377D2EC9561 | 3 | 1142819 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-02-11 | Stephan Grupp | CERT | Proof certified good | | 2025-02-11 | jeriffee | C-PRP | M2259791/126548297/108962602439/4397903454923644228009631 : C122D377D2EC9561 Proof Certified Good
Proof Power: 7
| | 2025-02-05 | debrouxl | F-ECM | Factor: 4397903454923644228009631 / ECM curve 19, B1=81363, B2=10984005, Montgomery Sigma=3609160810430084 | | 2017-11-21 | storm5510 | C-PRP | M2259791/126548297/108962602439 : 8428A82D831DE3C3 | | 2017-10-10 | Oliver Kruse | C-PRP | M2259791/126548297/108962602439 : 8428A82D831DE3C3 | | 2016-04-15 | alpertron | NF-PM1 | B1=500000, B2=15000000, E=12 | | 2008-07-14 | George Woltman | F-ECM | Factor: 108962602439 |
|
